added random xkcd function using "*" as the param
Will get a random comic from http://dynamic.xkcd.com/random/comic/
Needs testing
Merge pull request #255 from zuzak/upstream

Further automate the install script
fixed xkcd random and updated readme for link
Reverted file
updated xkcd random to use dbot api instead of function call.
Update modules/link/link.js

indent fix test
remove tabs
Merge branch 'patch-2' of github.com:zuzak/depressionbot into upstream